Many Questions...

Good price. See if the guy has the V8 K member for free also then just swap it into your car if it came from an A boby or use Schumaker mounts. The 318 will more than likely have a 904 behind it and that will be the same as your 6. No cutting necessary in the tunnel. As far as your cam someone else better qualified will do that one for you. If i dont know i'll say so. Good luck.